Asmall rubber ball is thrown at a heavier, larger basketball that is still. the small ball bounces off the basketball. assume there are no outside forces acting on the balls.
a. how does the force on the small ball compare to the force on the basketball?
b. compare the total momentum of the two balls before and after the collision?
c. the mass of the basketball is 600 grams and its velocity before the small ball hits is 0 m/s. the mass of the small ball is 100 grams and its velocity is +5 m/s before the collision and -4 m/s afterward. what is the velocity of the basketball after the collision?

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

What causes the formation of ocean currents?